He also served as a former U.S. Navy Reserve lieutenant who worked with river warfare units and a mobile inshore undersea warfare unit, according to Pentagon records obtained by CNN.

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Dorner is a former U.S. Navy Reserve lieutenant who worked with river warfare units and a mobile inshore undersea warfare unit, among other assignments, according to Pentagon records obtained by CNN.

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Dorner retired on February 1 as a lieutenant, having worked with mobile inshore undersea warfare units and having provided security on oil platforms in Iraq, according to Pentagon records.

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He notes the irony of using technology, from GPS location data to mobile social-sharing, to report on a uniquely high-tech form of warfare.

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